Chapter 21, Problem 21.2A

Interpretation Introduction

Interpretation:

Locate the transition metal atom or ion having specific electron configurations on the periodic table.

Concept Introduction: There is an algorithm to calculate the number of electron from the electron configuration

1. If the element belongs to s-block , its group number = no. of valence electrons
2. If the element belongs to p- block , group number = no. of valence electrons +10
3. If the element belongs to d-block, group no. = no. of electrons in (n-1) d subshell + no. of electron/s in ns shell.
4. If the element belongs to f-block, group no. = 3.